Clinching Sheet metal as a joining method

JP Machining · Dec 5, 2018

Has anyone built there own clinching machine or figured out a cheap method of using punch and dies from some place?

I make some parts that are currently spot welded , max 2 pcs of 20 ga stainless. Been looking into clinching machines to use instead of the spot welds, as fast, no heat, and no question if secured or not. So far the price on one machine was like $13k for a smallish machine with a 12" horn. It looks to me like a C frame press with a fancy punch and die set and just cant figure out how they are getting that kind of money for it. I'm waiting on a few other quotes to come in but so far its not looking like I'll be able to justify the price.

This is an example of what I'm talking about.

Ringleboy26 · Dec 5, 2018

Is this what you are looking for?

BTM Press brake 14'' | eBay

JP Machining · Dec 5, 2018

Hmm, maybe. That looks like to work in a press brake, I need a horn to stick out and reach inside of some parts but it might be a start. Thx

I'll have to look into it But I think the BTM stuff is only good for mild steel, I need for stainless. Typically that means a rectangular style clinch.

Ringleboy26 · Dec 5, 2018

I guess for 215 bucks it might be worth the roll of the dice.

Rob F. · Dec 5, 2018

Some types of standing seam metal roofing are seamed or hemmed together with portable tools that roll along the joint folding and crimping as they go. Been a while since Ive seen one but might be something to look at.

Bondo · Dec 6, 2018

That's pretty neat looking. It's like a mechanical spot weld.

I worked in the roofing industry for a while and i seamed a ton of downspout by hand. It was way different than this. That seamed together 4 layers of material into 1 square log.

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4 FN 27 · Dec 6, 2018

We use Toggle Locks in a few Applications.

We have made holders for the Press Brake and for our Hardware Presses.

We have 1 application where we need to attach 2 Hat Channels to the bottom of a Chassis made from Galvanneal. Spotwelding was difficult with having to clean the tips every 3 parts. Toggle Locks were the answer.

We built a holder for an Amada LD Press Brake. The Hat Channels were located using Half Shears. The Toggle Locks were done 4 at a time feeding the part in as the Back gage moved.

Clownshoes · Dec 20, 2018

If you can live with a hole in the metal it would probably be easier to do a simple punch and and die for staking the parts together and it would be flush like your spot welds. Clinching is basically the same thing but it disrupts both pieces so it's a little more involved, seems to be all the rage these days though.

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Clinching Sheet metal as a joining method

JP Machining

Stainless

Ringleboy26

Aluminum

JP Machining

Stainless

Ringleboy26

Aluminum

Rob F.

Diamond

Bondo

Hot Rolled

4 FN 27

Aluminum

Clownshoes

Aluminum

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